There was a book in the Mount Nelson Primary School library in the eighties that gave you instructions on how to be a spy. I used to borrow it regularly and have always desired a trench coat and dark glasses. Unfortunately I do not have prescription sunglasses so, these days, I would only make a bumbling spy dressed in gortex. This chap, Peter Wright, however, is the real espionage deal. He was a former assistant directer of M15 and if you've seen Spooks, you'll know what I am talking about (and not Tristan from All Creatures Great and Small, you're on the wrong track there). This book is one of the first in the twentieth century (in English) to throw light on the murky world of international espionage. Let me know once you've finished and I'll try and get you a copy of the Mitrokhin Archives.
The binding's not fabulous in this 1987 Heinemann Australian paperback edition, but it's holding together.
First published in 1987 in the US by Viking.